Allies, 5 letters
Becomes a member, 5 letters
Becomes a member of, 5 letters
Brings together, 5 letters
Connects, 5 letters
Couples, 5 letters
Enlists in, 5 letters
Falls in with, 5 letters
Gets into, as a club, 5 letters
Goes in with, 5 letters
Hops into the race, 5 letters
Makes ends meet?, 5 letters
Makes one, 5 letters
Opts for membership, 5 letters
Puts together, 5 letters
Signs on, 5 letters
Signs up with, 5 letters
Splices, 5 letters
Takes up membership, 5 letters
Takes up with, 5 letters
Teams up with, 5 letters
Unites, 5 letters
Becomes part of, 7 letters
Begins participating, 7 letters
Doesn't merely observe, 7 letters
Partakes of, as merriment, 7 letters
Participates, 7 letters
Sings along, 7 letters
Wants to see seas, perhaps, 12 letters
Is sociable, in a way, 13 letters
Enlists: Slang, 7 letters
Volunteers, 7 letters